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Hello, I have a question... Where can I found information about the cyclic behavior and parameters for Concrete02? I tried with

http://nisee.berkeley.edu/documents/eli ... -loads.pdf

but I have no access there.

Thanks!

Hello,

Defining the moment-rotation relationship for beams and columns is possible. Look at this:

http://opensees.berkeley.edu/wiki/index ... Aggregator

Dear Vesna,

I have a suggestion. What you have written would be correct only if the rectangular fiber took place in the whole y-z plane, but if the fiber were only in a particular quadrant, then that wouldn't be absolutely OK. So what I suggest is to change 3th and 1th quadrant by something like this: first point is the bottom-left point and the second the top-right point, having as reference the y-z plane for the given directions.

What do you thing about?

Thanks Vesna.

You are welcome, Vesna. By the way, in a recent post, I'm asking for the usage of composite response recorder or something like that, present in the last version of OpenSees. It says that can record information from all section in a beam-column. Can you help me please, giving me an example or the way I can use that?

Thanks!

Hello,

I'm still using "patch rect". I think it is easier for rectangular sections, because you only need two points.

Hello,

I want to know if someone could explain me how to use the composite response recorder...

thanks!

Thanks frank

Dear Vesna,

could I send the files to you and could you please take a look of them?

thanks!

Dear Frank,

My name is Felipe Cordero and I'm modeling wall buildings in OpenSees for my engineering thesis under the guidance of prof. Leonardo Massone, who has contributed to Opensees before. I've been modeling several 2D frame buildings, trying to explain the seismic behavior and the damage observed on some building after the Mw 8.8 earthquake that affected Chile on 27th February. I've sent you an email very early today.

I'll appreciate any help you can provide.

Felipe Cordero O.

Yes, you are right. I've been having problems on cyclic behavior. However, I'll be here soon with more questions and asking for help

Thanks.

Hello,

I'm working with big fiber section models for my thesis. I'm running pushover and time-history analysis and I'm getting really rare results (rare deformation and base reaction about twice or more times bigger than pushover). Trying to figure out what is the trouble, I decided to see what is happening with concrete.

And working with a little model 'im getting really rare behavior for cyclic loading

all codes are here: http://www.cec.uchile.cl/~fecorder/concrete.zip

The main file is concrete04.tcl. It performs a cyclic compresion and tension analysis over a simple zerolength element to observe what is happening with the response of the material.

And I'm getting, for example for concrete02, the following response: http://www.cec.uchile.cl/~fecorder/concrete02.png

I'm working with the last OpenSees release.

Thanks for any help, especially from developers.

if you have a too many ground motion files, the script fails because it opens every time the tmpEnvelop files.

It happens when we use;

set Dcontent [read [open tmpEnvNodalDisp.out ]];
set Di [lindex $Dcontent 2];
puts Sd$Di
set iDi "$iDi $Di";

I recommend to use the following lines:

set in [open tmpEnvNodalDisp.out];
set Dcontent [read $in];
set Di [lindex $Dcontent 2];
#puts Sd$Di
set iDi "$iDi $Di";
close $in;

This way closes the tmp file once it is used.

Thanks any way for the script, It has been very useful for me.

Hello,

I need to model a T shape wall, but it changes geometry with the heigh (the web grows). I need that the position of the flanges in the interface between two sections be the same, ie, it is necessary to have not coincident centroids.

How is it possible?

thanks!

Hello,

When I use a fiber section, is the fiber's centroid always centered with the node of the element?

Thanks!